/* Blog共通スタイル（main style.cssに追加） */

.blog-header {
  background: var(--primary-light);
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--border);
}

.blog-header__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'M PLUS Rounded 1c', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--primary);
  margin-bottom: 24px;
  transition: opacity .2s;
}

.blog-header__back:hover { opacity: .7; }

.blog-header__tags {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.blog-header__tag {
  font-family: 'M PLUS Rounded 1c', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
  background: #fff;
  border: 1px solid var(--primary-light);
  padding: 4px 12px;
  border-radius: 50px;
}

.blog-header__title {
  font-size: 3.2rem;
  line-height: 1.4;
  margin-bottom: 16px;
  color: var(--text);
}

.blog-header__meta {
  font-size: 1.3rem;
  color: var(--sub);
}

/* Article body */
.blog-article {
  padding: 64px 0 80px;
}

.blog-article__inner {
  max-width: 720px;
  margin: 0 auto;
}

.blog-article__lead {
  font-size: 1.8rem;
  line-height: 1.85;
  color: var(--text);
  margin-bottom: 48px;
  padding-bottom: 40px;
  border-bottom: 2px solid var(--primary-light);
}

.blog-article__body h2 {
  font-size: 2.2rem;
  margin: 48px 0 16px;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}

.blog-article__body p {
  font-size: 1.6rem;
  line-height: 1.95;
  color: #3a3a4a;
  margin-bottom: 20px;
}

.blog-article__body ul,
.blog-article__body ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

.blog-article__body li {
  font-size: 1.6rem;
  line-height: 1.85;
  color: #3a3a4a;
  margin-bottom: 8px;
}

.blog-article__callout {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 12px 12px 0;
  padding: 20px 24px;
  margin: 32px 0;
}

.blog-article__callout p {
  margin-bottom: 0;
  font-size: 1.55rem;
  color: var(--primary-dark);
}

.blog-article__cite {
  font-size: 1.2rem !important;
  color: var(--sub) !important;
  border-top: 1px solid var(--border);
  padding-top: 8px;
  margin-top: -8px !important;
}

/* CTA box */
.blog-cta {
  background: var(--primary);
  border-radius: 24px;
  padding: 40px;
  text-align: center;
  margin-top: 64px;
  color: #fff;
}

.blog-cta h3 {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.blog-cta p {
  font-size: 1.5rem;
  opacity: .85;
  margin-bottom: 24px;
}

/* Related articles */
.blog-related {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}

.blog-related h3 {
  font-size: 1.8rem;
  margin-bottom: 24px;
}

.blog-related__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.blog-related__card {
  background: var(--bg-light);
  border-radius: 16px;
  padding: 20px;
  border: 1px solid var(--border);
  transition: box-shadow .2s;
}

.blog-related__card:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,.08);
}

.blog-related__card h4 {
  font-size: 1.4rem;
  margin-bottom: 8px;
  line-height: 1.6;
}

.blog-related__card h4 a {
  color: var(--text);
  transition: color .2s;
}

.blog-related__card h4 a:hover { color: var(--primary); }

.blog-related__card p {
  font-size: 1.2rem;
  color: var(--sub);
}

@media screen and (max-width: 720px) {
  .blog-header__title { font-size: 2.4rem; }
  .blog-article__lead { font-size: 1.6rem; }
  .blog-article__body h2 { font-size: 1.9rem; }
  .blog-related__grid { grid-template-columns: 1fr; }
  .blog-cta { padding: 28px 20px; }
}